The CNMC annual report for 2025 confirms two things the industry had been anticipating for years: the copper network shutdown is complete, and fibre to the home now accounts for 91% of active fixed broadband lines. Spain has finished a transition that other European markets are still far from.

That is good news, and it carries an awkward consequence for anyone selling connectivity: the technical difference between operators has all but evaporated.

When the product stops standing out

For fifteen years, selling fibre was easy to explain. There was copper and there was fibre, and you noticed the difference on day one. That argument no longer exists. Today, across virtually the whole country, any operator can offer a line the customer will experience as identical to the neighbour’s.

From there, only two roads remain: compete on price, or compete on what happens when something breaks. The first is always won by whoever has more scale. The same report notes that three operators hold 74.2% of retail revenue, although that share has been falling for two years.

What you actually buy when you buy your own network

The standard answer is «control». It is true and far too vague. What you buy, specifically, is the time it takes you to know what happened.

With your own network, when a customer calls because the connection is bad, you have direct access to the metric that explains it. You can see the link, the equipment, the window when it degraded. On a wholesale network, you open a ticket and wait. The difference is not download speed: it is whether you can answer in ten minutes or in two days.

For a residential customer that matters little. For a business that invoices through that line, it is the only thing that matters.

When it does not pay off

Owning a network also means maintaining it, and that is where many small operators get their arithmetic wrong. Sector investment in 2025 was €6.073 billion and, excluding spectrum, it fell 9.8% year on year. That is not disinvestment: it is the end of a deployment cycle. But it does mean the cheap-to-build phase is over.

Deploying in an area already served by three networks is burning money. Deploying where nobody reaches, or reaches badly, still makes sense. The decision is not ideological; it is a map.

The hybrid almost nobody explains

In practice, almost no operator is pure. You own the network where volume justifies it and buy wholesale where it does not. What separates one operator from another is not the percentage of owned network, but whether the management layer is the same in both cases.

If the customer on your own footprint and the customer on wholesale see different systems, different timescales and different answers, you have built two companies inside one. That is the expensive mistake, and no amount of new fibre fixes it.

What lies ahead

The sector closed 2025 with 63,000 people employed, the highest figure of the past decade. That is no accident. When infrastructure stops being the differentiator, the differentiator becomes the people and the systems behind them.

Copper went dark and hardly anyone noticed. What comes next is harder to miss: competing when the product is identical forces you to be better at everything else.